Defense & Security

U.S. Defense Policy

Upcoming Event

January 12

2026

Defense & Security To dare mighty things: US defense strategy since the revolution

The Brookings Institution, Washington DC

Monday, 10:00 am - 11:15 am EST

CH-47 Chinook Helicopters fly past US flags at the Washington Monument during the Army 250th Birthday military parade in Washington DC on Saturday, June 14, 2025.

Security Alliances & Partnerships The allies after America

Philip H. Gordon, Mara Karlin

December 16, 2025

U.S. President Donald Trump delivers remarks regarding the Administration's National Security Strategy at the Ronald Reagan Building and International Trade Center in Washington D.C, U.S., December 18, 2017.

Defense & Security Breaking down Trump’s 2025 National Security Strategy

Scott R. Anderson, Aslı Aydıntaşbaş, Pavel K. Baev, Vanda Felbab-Brown, Daniel S. Hamilton, Kari Heerman, Mara Karlin, Patricia M. Kim, Lynn Kuok, Michael E. O’Hanlon, Steven Pifer, Stephanie K. Pell, Landry Signé, Melanie W. Sisson, Constanze Stelzenmüller, Caitlin Talmadge, Tara Varma, Valerie Wirtschafter, Andrew Yeo

December 8, 2025

U.S. President Donald Trump looks on next to Russian President Vladimir Putin during a press conference following their meeting to negotiate an end to the war in Ukraine, at Joint Base Elmendorf-Richardson, in Anchorage, Alaska, U.S., August 15, 2025.

U.S. Defense Policy New START’s death is around the corner. Please, someone, tell the president.

Steven Pifer

December 5, 2025

Experts

John Villasenor Nonresident Senior Fellow - Governance Studies, Center for Technology Innovation (CTI)

Melanie W. Sisson Senior Fellow - Foreign Policy, Strobe Talbott Center for Security, Strategy, and Technology

Benjamin Wittes Senior Fellow - Governance Studies, Editor-in-Chief - Lawfare

Tom Stefanick, Visiting Fellow, Foreign Policy, Security and Strategy, The Brookings Institution

Tom Stefanick Nonresident Senior Fellow - Foreign Policy, Strobe Talbott Center for Security, Strategy, and Technology

Joshua T. White Nonresident Fellow - Foreign Policy, Center for Asia Policy Studies

Mara Karlin Visiting Fellow - Foreign Policy, Strobe Talbott Center for Security, Strategy, and Technology

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